Capitulo 2

Question 1

Is the total mass of the protons and neutrons contained in the nucleus

Answer 1

Mass number

Question 2

Is formed by the cluster of protons and neutrons in the center of the atom.

Answer 2

Atomic nucleus

Question 3

The number of protons in the nucleus of an atom os known as the atoms

Answer 3

Atomic number

Question 4

Is the defining value of each element

Answer 4

Atomic number

Question 5

Are atoms of the same element with different numbers of neutrons

Answer 5

Isotopes

Question 6

At room tempature can be carried as solid, liquid or gas

Answer 6

Elements

Question 7

Life depends on?

Answer 7

Electrons capturing and realeasing energy

Question 8

Consist of two or more atoms, from the same or different elements, that are held together by interactions among their outermost electron shells

Answer 8

Molecules

Question 9

Inert atoms

Answer 9

Atoms that will not react with each other if the outermost shell is completly empty or full

Question 10

Reactive atoms

Answer 10

Atoms that will react with ither atoms if the outermost shell is partially full

Question 11

Cannot be broken down into simpler substances

Answer 11

Elements